Traumatic Brain Injury and Electroencephalogram Findings

  • Renato Anghinah
  • Jéssica Natuline Ianof


The diagnosis of most cognitive disorders is clinical, but the electroencephalography (EEG) plays a role in the evaluation, classification, and follow-up of these disorders, such as traumatic brain injury (TBI). In fact, EEG was the first clinical neurodiagnostic assessment that revealed abnormal brain function following a TBI, but its use as a technique for mapping injured brain areas has not been sufficiently explored.

Electrophysiological methods, such as quantitative electroencephalography (qEEG), are a very promising diagnostic tool. qEEG during the awake state in subjects with TBI have shown attenuated posterior alpha or focal irregular slow-wave activity or theta activity over the temporal region, increased delta power, and reduced alpha power. After TBI, the lasting consequences include cognitive deficits, post-traumatic stress disorder, mood changes, and post-traumatic epilepsy. The risk of seizures following injury and the development of post-traumatic epilepsy are well-documented consequences of TBI. Sleep disorders are a common complaint following TBI and worsens morbidity and long-term sequelae.


Electroencephalogram (EEG) Electrical activity Quantitative EEG Brain waves Frequency bands Head injury Brain injury Traumatic brain injury (TBI) Seizure Sleep 


Conflict of Interest

There is no conflict of interest to declare.


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Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  • Renato Anghinah
    • 1
    • 2
  • Jéssica Natuline Ianof
    • 1
  1. 1.Department of Neurology – Cognitive Rehabilitation after TBIClinics Hospital – School of Medicine – University of São PauloSão PauloBrazil
  2. 2.Center of Excellence in Neurology – Americas Serviços MédicosSão PauloBrazil

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